:root{color-scheme:dark;--bg:#0e1118;--panel:#171c27;--line:#2b3342;--muted:#98a5b8;--accent:#a5d7ff;--U:#f4f5f7;--R:#ef6571;--F:#59cd91;--D:#f5d552;--L:#ffab50;--B:#599cf7}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#eef3fa;font:16px/1.5 system-ui,sans-serif}button{font:inherit;cursor:pointer;border:1px solid var(--line);background:#202735;color:#eaf1fa;border-radius:8px;padding:10px 15px;transition:background .15s}button:hover{background:#303a4b}button:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button:disabled{opacity:.4;cursor:default}[hidden]{display:none!important}header{max-width:1440px;margin:auto;padding:26px 42px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{font-weight:800;letter-spacing:.12em;font-size:17px;display:flex;align-items:center;gap:12px}.logo{font-size:30px;color:var(--accent)}.header-note,.eyebrow,.metric{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--muted)}main{max-width:1440px;margin:auto;padding:38px 42px 20px}.intro{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:30px}.intro p{margin:7px 0;color:var(--muted)}h1{font-size:clamp(28px,3.3vw,46px);line-height:1.2;margin:10px 0;font-weight:650;letter-spacing:-.04em}.metric{border:1px solid var(--line);padding:9px 12px;border-radius:30px;white-space:nowrap;color:var(--accent)}.workspace{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(310px,1fr);gap:24px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px}.editor{padding:25px;overflow:hidden}.section-head{display:flex;align-items:center;justify-content:space-between;gap:8px}h2{font-size:22px;font-weight:600;margin:0}#count{font-size:14px;color:var(--muted)}.palette{display:flex;justify-content:center;gap:10px;margin:25px 0 18px;flex-wrap:wrap}.swatch{display:flex;flex-direction:column;align-items:center;gap:5px;padding:6px 9px;border-color:transparent;background:transparent;font-size:12px;color:var(--muted)}.swatch i{width:30px;height:30px;display:block;background:var(--color);border-radius:7px}.swatch.active{border-color:var(--accent);background:#283445;color:#fff}.net{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:repeat(3,auto);gap:12px;max-width:640px;margin:28px auto 30px}.face{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;position:relative;background:#10141d;padding:5px;border:1px solid #343e50;border-radius:8px}.face[data-face=U]{grid-area:1/2}.face[data-face=L]{grid-area:2/1}.face[data-face=F]{grid-area:2/2}.face[data-face=R]{grid-area:2/3}.face[data-face=B]{grid-area:2/4}.face[data-face=D]{grid-area:3/2}.sticker{padding:0;aspect-ratio:1;border-radius:4px;border:1px solid #3c4759;background:#242d3c;position:relative;min-width:0}.sticker.blank:after{content:'';position:absolute;inset:46%;background:#5d6a7e;border-radius:50%}.sticker.related{outline:2px solid #fff;outline-offset:1px;z-index:1}.sticker[data-color]{background:var(--color);border-color:transparent}.center{cursor:default;color:#101722;font-size:clamp(14px,1.5vw,21px);font-weight:800}.editor-footer{border-top:1px solid var(--line);padding-top:20px;color:var(--muted);font-size:14px}.actions{display:flex;gap:10px;margin-top:16px}.result{padding:28px}.result>.eyebrow{color:var(--accent);margin:0 0 10px}.explain{color:var(--muted);margin:12px 0 24px}.primary{width:100%;background:var(--accent);color:#122238;border:0;font-weight:700;padding:15px}.primary:hover{background:#c3e5ff}#cancel{width:100%;margin-top:8px}#status{font-size:14px;color:var(--muted);padding:18px 0;min-height:60px}#status.error{color:#ff9aa2}.result-meta{font-size:14px;color:#7fdea8;border-top:1px solid var(--line);padding-top:15px}.algorithm{display:flex;gap:7px;flex-wrap:wrap;margin:14px 0;font:700 20px ui-monospace,monospace}.move{padding:7px 9px;border-radius:6px;background:#263244}.move.current{color:#111b29;background:var(--accent)}.playback{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.playback button{padding:8px 10px;font-size:14px}.playback span{font-size:14px;color:var(--muted)}#copy{width:100%;font-size:14px}.notes{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}.notes h3{font-size:14px;margin:0 0 10px}.notes p{font-size:14px;color:var(--muted);margin:10px 0}footer{display:flex;justify-content:space-between;gap:15px;color:var(--muted);font-size:12px;padding:24px 0}@media(max-width:1000px){.metric{display:none}.workspace{grid-template-columns:minmax(0,1.4fr) minmax(290px,1fr)}.editor{padding:16px}.net{gap:7px}.face{gap:3px;padding:3px}}@media(max-width:760px){header{padding:16px 20px}.header-note{display:none}main{padding:22px 16px}.intro{margin-bottom:22px}.workspace{grid-template-columns:1fr}.net{max-width:540px}.result{padding:22px}.swatch{padding:4px 7px}.palette{gap:5px}.intro p{font-size:14px}footer{flex-direction:column;gap:5px}.center{font-size:16px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}